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Posts by anon

Total # Posts: 2,768

Math
Thanks.

Math
1.You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) experimental; the result is based on the number of possible outcomes experimental; the result is found by repeating an experiment ...

Math - Probability
A spinner is divided into 11 equal sections numbered from 0 to 10. You spin the spinner once. What is P(even)? a. 3/5 b. 1/2 c. 5/11 d. 6/11

Art
A D B if you goto connections academy

chemistry
How many milliliters of a 0.250 M acetic acid solution must be added to 50.0 mL of a 0.750 M NaOH solution to produce a buffer solution with pH = 4.500 ? The pH is given by which we can calculate the concentration of [H+] How do we approach the problem from there?

Math
Is it 81?

Math
18

Math
Is it 81?

Math
A fence surrounds a square plot of land. The area is 324 yd 2. Find the length of each side. Use the Systematic Guess and Check method. What I already know: It is a square shape. And all squares have equal sides.

Social Studies
1. ) At the height of Topa Inca's rule, how many people lived in the Incan Empire? a. ) 100,000 b. ) 2 million c. ) 12 million d. ) 200 million 2. ) Like many modern-day countries, Incan nobles conducted a ____ so that people could be taxed. a. ) competition b. ) research ...

Calculus
c

Science
which of the following would have the greatest force? •an object with low mass accelerating slowly •an object with low mass accelerating quickly •an object with high mass accelerating quickly •an object with high mass accelerating slowly (and yes i go to to...

Math
Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?

angles
Abc is 71. and dbc is 45. then what is abd

Pre Algebra Probability
^ O_O WOW

Language Arts
ladykiller killer is right

Art
Yeah, cotton

Art
Yes, the answer is C.

Math
Help, Divide 50 by half, and add 20. I do not understand.

chemistry
You find the Ka of your unknown acid is 6.3x10 -5 . If you are being asked to make a buffer at pH 4.00, what is the appropriate ratio of A- to HA to be combined in your flask?

chemistry
You measure the pH of a 0.50 M unknown acid solution using a pH meter and it is found to be 1.74. What is Ka for the acid? I know ph=-log{H+} Where do I go from here?

science help
1. A 2. D 3. D 4. B just took the test 100%

science
What is the momentum of a two-particle sys- tem composed of a 1300 kg car moving east at 60 m/s and a second 1500 kg car moving west at 95 m/s? Let east be the positive direction. Answer in units of kg · m/s.

Math
3.8?

Math
3. A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. (1 point) 3.8 ft3 60 ft3 15 ft3 10.4 ft3 Please help me work this out! I'm not sure how to do this

us history
It is B

Math
what was the answer?

History
Vaguely

History
Henry Clay: What did they say about their hopes for the future of the United States? How did they work to help change the United States? How did they react to key events happening in the United States? Were there any key events in each person’s life that shaped their ...

chem
. Antimony pentachloride decomposes according to the following equation. SbCl5 (g) → SbCl3 (g) + Cl2 (g) Suppose that 10.0 g of antimony pentachloride is placed in a 5.00 L container and allowed to establish equilibrium. Calculate the concentration of all species at ...

Math
Oh sorry I forgot to put the key and the formatting kind've screwed up let me fix that. Doctor 1 Doctor 2 | 3 | 5 9 2 0 | 2 | 0 0 2 3 6 8 7 5 | 1 | 3 7 9 7 3 2 1 1| 0 | 2 2 3 9 Key = 5|1 = 15 1|3 = 13 E.G 5|1|3 (15, 13)

Math
the back-to-back stem-and-leaf plot below shows the ages of patients seen by two doctors in a family clinic one day. what is the difference between the age of the oldest patient seen by doctor 1 and the age of the oldest patient seen by doctor 2. AGE OF DOCTORS PATIENTS Doctor...

Algebra
1.A right triangle has leg of b of length 7 and a hypotenuse of length 11. What is a length of the other leg, a? Round to the nearest tenth if necessary. (1 point) A. 2.0 B. 8.5 C. 13.0 D. 9.6 2. Find the length of a line segment CD with endpoint C at (-3,1) and endpoint D at...

maths
Let's say the Purse is a variable like P P + P + 18.20 = 98 2P = 79.80 (Divide that into two) = 39.90 Answer: P = 39.90

1
Robert lol you are so right

chemistry
thank you

chemistry
An aqueous solution contains 64g of ethanol( C2H5OH) in 122 grams of solution. The mole fraction of ethanol is:

Math
Don't answer this anymore.... I got it

Math
Find the 10th term of a nonconstant arithmetic sequence whose 1st term is 3 with the 1st, 4th, and 13th term forming a geometric sequence. I've tried doing it differently everytime, but I always come to a dead end..

algebra2
(x-5)^1/3=2 then you raise 2 to the 3rd power add 5 and voila...x=13

algebra2
X=13

CHEMISTRY HELPPPP!!!!!!!!!
Consider the decomposition of NH3 (g). 2 NH3 (g) → N2 (g) + 3 H2 (g) The reaction is catalyzed on a surface of either tungsten or osmium. The activation energies for the catalyzed and uncatalyzed reactions are given below. W Ea = 163 kJ/mol Os Ea = 197 kJ/mol No catalyst...

Health
1. D 2. B 3. D 4. False 5. D

Statistics
Shopping Outlet A shopping outlet estimates the probability distribution of the number of stores shoppers actually enter as shown in the table below. x 0 1 2 3 4 p(x) 0.05 0.35 0.25 0.20 0.15 What is the probability that shoppers are just window shopping and not entering any ...

Chemistry
D=PM/RT Pressure= 1 atm R= constant value (Use google) T= 273K For M.M of xenon use periodic table

Chemistry
PV=nRT T=PV/nR

chemistry
PV=nRT Convert grams into moles.(1/32+12) Temperature must be in Kelvin (273K) Pressure must be in atm. And R is a constant value (Google it) so V=nRT/P

Chemistry
P=nRT/V

Chemistry
A student mixes 5.0 mL of 0.00200 M Fe(NO3)3 with 5.0 mL 0.00200 KSCN. She finds that the concentration of FeSCN2+ in the equilibrium mixture is 0.000125 M. Follow these steps to determine the corresponding experimental value of Kc for the reaction of Fe3+ and SCN– to ...

Please Check My Math Answers. Thanks!
its all right. just read the questions and dont go off the numbers.

arabic!!!
3. مَا .......... ياَ أَخِي ؟ إِسْمِي سَالِم ‌أ. إِسْمُكِ ‌&#...

career
kers. They like accomplishing their work step-by-step and are good record keepers. a. conventional* b. enterprising c. social d. realistic

P.E.
About 80% of infections disease is spread by hand contact. True* False

Art
My answers: 1.b 2.d 3.d 4.c 5.d

Art
During which time period were artists keenly interested in using the golden ratio in their paintings? A.Baroque Period B.Oriental Period C.Futuristic Period D.Renaissance Period When the Greeks built the Parthenon its dimensions nearly matched the golden ratio which is the ...

Language arts
It's C

physics
Background: the Centaur impacts the moon with a velocity of 2.500 km/s (relative to the moon). Why is it acceptable to assume that the impact velocity will be consistent, even if the mass is not consistent? (Hint: think about the path that the vehicle approaches the moon)

a
yas meredith you know your medical skills

chemistry
What I was saying in the response was that with your help I got to that part, but I was still confused on the formula. I got it now. Thank you.

chemistry
I can get to the PV=nRT part. What number would you put for R?

chemistry
What volume of oxygen gas can be collected at 0.565 atm pressure and 48.0◦C when 42.9 g of KClO3 decompose by heating, according to the following equation? 2 KClO3(s) ∆−−−−→2KCl(s) + 3O2(g) MnO2

Physics
Please help due in less than 2 hours!! A person whose mass is m = 86.0 kg steps on a mechanical bathroom scale placed on an inclined plane that makes the angle α = 21.3° with the horizontal. What is the reading on the scale? i've tried m*g*sin(21.3) and it still ...

Physics
never mind it's 0, just seemed too simple

Physics
A cube of mass m1 = 6.8 kg is sitting on top of another cube of the same size and mass m2 = 0.7 kg while they are both in free-fall. Ignoring any air resistance, what is the magnitude of the normal force with which the bottom cube is acting on the top cube? I've tried ...

calculus
State whether or not the following statements are true. Justify your reasoning.? a. Vector a • (Vector b + Vector c) = Vector a • Vector b + Vector a • Vector c b. Vector a × (Vector b + Vector c) = Vector a × Vector b + Vector a × Vector c c. ...

math
A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian co-ordinates and describe which representation may be more ...

LA
1. b 2. a 3. c 4. c 5. a 6. d 7. c 8. a 9. c 10. b these are all 100% correct. i just took the quiz. these are the answers for CA honors english 1b unit 2: romeo and juliet lesson 3: romeo and juliet: act 1, continued

Science!!!
Inertia; a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. Just for anyone else wondering.

english
^ What are those

algebera
The guy above me is right, the ACTUAL answers are 1. B 2. A 3. A 4. A 5. B

Math
a circle is divided into 9 equal parts. What is the angle measure of two of those parts

Algebra 1
me is all right

precalculus
Find the number of negative integers greater than -500 that are divisible by 33. Also find their sum. How do I set up this problem?

Calc B/C
Assume no air friction and that the acceleration due to gravity is 10 meters/sec^2. A ball is moving horizontally at a rate of 5 meters/sec. until it falls off the edge of a platform. The height, h, of the platform would have to be ___ meters if the ball hit the ground 8 ...

Calc B/C
The common external tangents to the graphs for (x+1)^2+y^2=1 and (x-2)^2+y^2=4 are drawn. Find the slope of the tangent line that has a positive slope. I tried finding the derivatives and setting them equal to each other, but that didn't give me an answer. Please help!

Physics
A mass of 0.3 kg is attached to the end of a massless spring of spring constant 0.25 N/m. It is released from rest (t=0). After 0.7 s, the speed of the mass is measured to be 2.0 m/s. What is the amplitude of oscillation?

Calc
If y=3x^2-2, then dy/d(2x-3)= ? I've never taken derivatives with respect to anything other than a single variable, such as x, y or t, so i'm not sure how to start this problem! Thanks

math
sam you had a typo in .4 you wrote -7 it was -2 and bea miller is correct 100%

~MATH~
100% !!!!!

Language Arts
Themselves? Try again!! Remember. Personal Pronoun in the objective case...

precalculus
Solve the triangle α = 27 degrees 30', c = 52.8, a = 28.1

Math- check my answers pls
you_dont_have_the_answers is correct

Math.
Everybody's quiz is different. They change around a couple of questions in the quiz so not everybody has the same question. They're not stupid they know u guys are giving answers. So that's what some of u are getting answers wrong when ppl just give the answers to ...

Social Studies
#5 is actually just C and D

Art
PeN1S is right (on so many levels) lol 100% Thanks man

Physics
Instead of copy pasting every problem from loncapa why don't you try attempting them yourself?

Language Arts
B was correct thanks guys! :)

english check
Treat the Earth and all that dwell thereon with respect. Remain close to the Great Spirit. Show great respect for your fellow beings. Work together for the benefit of all Mankind. Give assistance and kindness wherever needed. Do what you know to be right. Look after the well ...

Social Studies
the answer is c.spain

english
1. The Cherokee people are being addressed and it is written in first, second, and third person. 2. Respect to the people around you, cooperation, giving and showing kindness, honesty and truthfulness, taking care of yourself. 3. They Cherokee people follow these commandments ...

english
Treat the Earth and all that dwell thereon with respect. Remain close to the Great Spirit. Show great respect for your fellow beings. Work together for the benefit of all Mankind. Give assistance and kindness wherever needed. Do what you know to be right. Look after the well ...

LA
I can't process what just happened- Salty people are salty. Recent answers are right btw.

Language Arts
B is correct

Language Arts
What does Johnny’s mastery of riding Goblin show about his character? A. He is rash and quick-tempered. B. He is brave and determined. C. He is immature and selfish. D. He is arrogant and proud

Language Arts
Correct! Thanks guys!

math
x+4x/15-x=-7/3-3/5 (bringing like terms together) 4x/15=-7/3-3/5 (Make the denominator common by multipying 3 with 5 and 5 by 3)(Also multiply the numerator by the same numbers) 4x/15=-35-9/15(15 cancels out on both sides) 4x=-44 (divide 44 by 4) x=-11

Science
C B B B 100%

Art
Diana is correct!

language art
Think about the work you completed in your reading character role. Determine the ideas that would be most worthy to share in a literary discussion about Johnny Tremain. Provide an explanation for your choices. How did the role you selected and the work you completed help you ...

LA - 1 question
THANKS SO MUCH SANTANA! got 100% because of your answers!!

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